A semi-aquatic mammal found throughout Illinois, muskrats are often mistaken for beavers. But unlike the wide, flat tail of the beaver, the muskrat’s tail is long and thin. And while both live in lodges, muskrats build theirs out of vegetation like cattails, not wooden material like the sticks and logs beavers use.

Muskrats are wetland “engineers.” As they eat aquatic vegetation and build their houses, they naturally create openings in the water to form hemi-marsh—a type of wetland that provides critical foraging and nesting habitat for many marsh birds and other wildlife.

Native to Illinois, the Gray Tree Frog is one of only a handful of North American frog species that produce glycerol during hibernation to withstand below-freezing temperatures. The sweet liquid acts as a natural antifreeze in the frog’s cells.

This tree-loving frog lives in woodlands near water and is well known for changing color based on the outdoor temperature, amount of light, and other factors; its color can range from gray to brown to green at any given time.

Illinois is a stopover for Ruddy Ducks during the spring and fall migrations. In summer, during the breeding season, the usually dull gray bill of the male Ruddy Duck turns a bright blue. As part of its courtship display, the male beats its bill against its neck to create bubbles in the water.

While their numbers are currently stable, Ruddy Ducks are dependent on wetlands for survival. The continuing loss of habitat would put these wetland casanovas at risk.

All dragonflies have compound eyes covering most of their head like a motorcycle helmet, allowing them to see in virtually all directions at the same time. Blue Dashers are small compared to many other dragonfly species, but the males are among the showiest, including their blue-green eyes.

Found throughout Illinois, Blue Dashers—like all dragonflies—rely on marshes and other wetlands for breeding and survival, and their numbers are a good indicator of the health of a wetland ecosystem.

Many pollinator populations are declining, but Rusty Patched Bumble Bees are now so rare that they’ve been placed on the U.S. endangered species list. In recent years, they’ve been seen in Illinois at two Wetlands Initiative project sites, where healthy prairie–wetland landscapes are being restored.

Only worker bees and males, not queens, have the distinctive rusty reddish patch on their back. And unlike some pollinators, Rusty Patched Bumble Bees collect pollen and nectar from a wide variety of flowers and are not reliant on a particular plant.

The Hardest-Working Ecosystem Around

Wetlands are critical for improving water quality, providing habitat for wildlife, and moderating the effects of climate change. They are beautiful places for people to hike, paddle, birdwatch, and otherwise enjoy time in the outdoors. And yet, wetlands remain one of the most threatened ecosystems in the world today.

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Wetland restoration brings together ecology and engineering to create newly resilient ecosystems. A sustainable future is no longer possible through preservation alone. By bringing back an area’s natural water patterns, removing invasive plant species, and reintroducing native ones lost over time, we make room for wildlife to find its way back. The result is a vibrant, abundant, flourishing landscape.